An extra "confirm" would be detrimental to anyone under time constraints. Bad idea.
It really wouldn't. Anyone who loses to time running out would lose to that regardless. Plus, if someone is running low on time, they may be even more prone to missclick due to being on edge. It is more of a leap in logic that the player will lose to time if they have to confirm. It should at least be an option for the computer version.
Sorry but that doesn't make sense. Games are often decided by a couple of of seconds. To say that any additional required action wouldn't make a difference is incorrect
You can’t mouse slip OTB.